Datasheet ADXL362 (Analog Devices) - 4

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ADXL362 Data Sheet TABLE OF CONTENTS
Features .. 1 Device ID Register ... 24 Applications ... 1 Device ID: 0x1D Register .. 24 General Description ... 1 Part ID: 0xF2 Register .. 24 Functional Block Diagram .. 1 Silicon Revision ID Register ... 24 Revision History ... 3 X-Axis Data (8 MSB) Register .. 24 Specifications ... 4 Y-Axis Data (8 MSB) Register .. 24 Absolute Maximum Ratings .. 6 Z-Axis Data (8 MSB) Register .. 24 Thermal Resistance .. 6 Status Register ... 25 Package Information .. 6 FIFO Entries Registers ... 26 Recommended Soldering Profile ... 6 X-Axis Data Registers .. 26 ESD Caution .. 6 Y-Axis Data Registers .. 26 Pin Configuration and Function Descriptions ... 7 Z-Axis Data Registers .. 26 Typical Performance Characteristics ... 8 Temperature Data Registers .. 26 Theory of Operation .. 13 Soft Reset Register .. 26 Mechanical Device Operation .. 13 Activity Threshold Registers ... 27 Operating Modes .. 13 Activity Time Register ... 27 Selectable Measurement Ranges ... 13 Inactivity Threshold Registers .. 27 Selectable Output Data Rates .. 13 Inactivity Time Registers ... 27 Power/Noise Tradeoff .. 14 Activity/Inactivity Control Register .. 29 Power Savings Features .. 15 FIFO Control Register ... 30 Ultralow Power Consumption in Al Modes .. 15 FIFO Samples Register .. 31 Motion Detection ... 15 INT1/INT2 Function Map Registers ... 31 FIFO ... 17 Filter Control Register ... 33 Communications .. 17 Power Control Register.. 34 Additional Features .. 18 Self Test Register ... 35 Free Fal Detection ... 18 Applications Information .. 36 External Clock .. 18 Application Examples .. 36 Synchronized Data Sampling .. 18 Power.. 37 Self Test .. 18 FIFO Modes .. 38 User Register Protection .. 18 Interrupts ... 39 Temperature Sensor ... 18 Using Synchronized Data Sampling .. 40 Serial Communications ... 19 Using an External Clock .. 41 SPI Commands ... 19 Using Self Test ... 41 Multibyte Transfers .. 19 Operation at Voltages Other Than 2.0 V .. 41 Invalid Addresses and Address Folding .. 19 Mechanical Considerations for Mounting .. 41 Latency Restrictions ... 19 Axes of Acceleration Sensitivity ... 42 Invalid Commands ... 19 Layout and Design Recommendations ... 42 Register Map .. 23 Outline Dimensions ... 43 Register Details ... 24 Ordering Guide .. 43 Rev. E | Page 2 of 43 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE PACKAGE INFORMATION RECOMMENDED SOLDERING PROFILE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION MECHANICAL DEVICE OPERATION OPERATING MODES Measurement Mode Wake-Up Mode Standby SELECTABLE MEASUREMENT RANGES SELECTABLE OUTPUT DATA RATES Antialiasing POWER/NOISE TRADEOFF POWER SAVINGS FEATURES ULTRALOW POWER CONSUMPTION IN ALL MODES MOTION DETECTION Activity Detection Referenced and Absolute Configurations Fewer False Positives Inactivity Detection Linking Activity and Inactivity Detection Default Mode Linked Mode Loop Mode Autosleep Using the AWAKE Bit FIFO System Level Power Savings Data Recording/Event Context COMMUNICATIONS SPI Instructions Bus Keepers MSB Registers ADDITIONAL FEATURES FREE FALL DETECTION EXTERNAL CLOCK SYNCHRONIZED DATA SAMPLING SELF TEST USER REGISTER PROTECTION TEMPERATURE SENSOR SERIAL COMMUNICATIONS SPI COMMANDS Read and Write Register Commands Read FIFO Command MULTIBYTE TRANSFERS Register Read/Write Auto-Increment INVALID ADDRESSES AND ADDRESS FOLDING LATENCY RESTRICTIONS INVALID COMMANDS REGISTER MAP REGISTER DETAILS DEVICE ID REGISTER DEVICE ID: 0x1D REGISTER PART ID: 0xF2 REGISTER SILICON REVISION ID REGISTER X-AXIS DATA (8 MSB) REGISTER Y-AXIS DATA (8 MSB) REGISTER Z-AXIS DATA (8 MSB) REGISTER STATUS REGISTER FIFO ENTRIES REGISTERS X-AXIS DATA REGISTERS Y-AXIS DATA REGISTERS Z-AXIS DATA REGISTERS TEMPERATURE DATA REGISTERS SOFT RESET REGISTER ACTIVITY THRESHOLD REGISTERS ACTIVITY TIME REGISTER INACTIVITY THRESHOLD REGISTERS INACTIVITY TIME REGISTERS ACTIVITY/INACTIVITY CONTROL REGISTER FIFO CONTROL REGISTER FIFO SAMPLES REGISTER INT1/INT2 FUNCTION MAP REGISTERS FILTER CONTROL REGISTER POWER CONTROL REGISTER SELF TEST REGISTER APPLICATIONS INFORMATION APPLICATION EXAMPLES Device Configuration Autonomous Motion Switch Start-up Routine Using External Timing Triggers Example: Implementing Free Fall Detection Start-up Routine POWER Power Supply Decoupling Power Supply Requirements FIFO MODES FIFO Disabled Oldest Saved Mode Stream Mode Triggered Mode FIFO Configuration FIFO Interrupts Retrieving Data from FIFO INTERRUPTS Interrupt Pins Alternate Functions of Interrupt Pins Activity and Inactivity Interrupts Data Ready Interrupt Using FIFO Interrupts FIFO Watermark FIFO Ready Overrun USING SYNCHRONIZED DATA SAMPLING USING AN EXTERNAL CLOCK USING SELF TEST OPERATION AT VOLTAGES OTHER THAN 2.0 V MECHANICAL CONSIDERATIONS FOR MOUNTING AXES OF ACCELERATION SENSITIVITY LAYOUT AND DESIGN RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE